Sprout. I am almost sure your grille isn't stainless steel like your subject suggests. My 66 hardtop has an aluminum grille that is anodized. One good way is to have it redone by a company that specializes in anodizing. Another way is to remove the coating (with oven cleaner some posts say) and polish, and keep polishing I expect because aluminum will oxidize rather quickly.
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I don't know about 66s or cleaning aluminum - but I do know that if that is anodized aluminum, that anodizing (like a coating) is there to protect the aluminum from corroding/oxidizing. If you remove this coating, I recommend waxing the aluminum to protect it (or go and have it re-anodized maybe) Just my 2¢
Ron Cook TC Gold Member #1276
1969 300 Deluxe HTSS39669 300 Deluxe325HP L3569memorylane 1971 Malibu 2DR HT "Never let fear and good judgement hold you back!"
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